戈壁区红胶泥质土蓄水结构的地震动响应  

Seismic Response of Red Clayey Soil Water Storage Structure in Gobi Region

作　　者：冯小勇 王新选 帅永辉 夏培炎 程选生[2] Feng Xiaoyong;Wang Xinxuan;Shuai Yonghui;Xia Peiyan;Cheng Xuansheng(China Railway 21 First Group Second Engineering Co.,Ltd.,Lanzhou 730050,China;Lanzhou University of Technology,730050,China Westem Engineering Research Center of Disaster Mitigation in Civil Engineering,Ministry of Education,Lanzhou 730050,China)

机构地区：[1]中铁二十局集团第二工程有限责任公司,兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,730050

出　　处：《特种结构》2025年第2期76-79,86,共5页Special Structures

摘　　要：地震动响应会使蓄水池土体发生强烈的振动,进而导致土体中的水-固体之间产生摩擦力和压缩变形,从而影响液-固耦合动力响应规律。通过理论分析和采用数值模拟的方法,针对在不同贮液工况下的大型红胶泥质土蓄水结构动力响应进行分析。研究表明:不同工况下结构各个转角处易发生形变,其中豆砾石层的破坏较严重,由于液面晃动比较剧烈,产生较大的液动压力,随着液面高度的增加,结构为了实现地应力平衡,累计的水平位移逐渐增大。同时,贮液结构内部所存储的液体在地震荷载作用和贮液结构护坡约束下,液面晃动比较剧烈,产生较大的液动压力,由于自由约束较少,在周围土体的相互挤压下,更容易产生较大的应力。The ground motion response will cause strong vibration of the soil in the reservoir,which will lead to friction and compression deformation between the water and solid in the soil,thus affecting the dynamic response of the liquid-solid coupling.Through theoretical analysis and numerical simulation,this study aimed to analyze the dynamic response of large-scale red clayey soil water storage structures under varying liquid storage conditions.The results showed that deformations were prone to occur at the structure's corners across different working conditions,with the pea gravel layer sustaining more severe damage.Severe liquid sloshing generated substantial hydrodynamic pressure.As the liquid level rose,the structure experienced increased cumulative horizontal displacement to achieve in-situ stress equilibrium.The stored liquid,subjected to seismic loads and slope protection constraints,exhibited more intense surface shaking,leading to greater hydrodynamic pressure.Additionally,with fewer free constraints,the surrounding soil's mutual extrusion more easily produced higher stress.

关 键 词：戈壁地区 蓄水结构 红胶泥质土 液-固耦合 动力响应 

分 类 号：TU991.341[建筑科学—市政工程]